Gary, This may not be part of what your question was, however, full time use requires diligence in several areas. Two are important for convenience.
First, always leave the valve to your black tank closed, and empty it WHEN it needs to be. If you leave it open at all times, the liquids run out, leaving the solids to build up causing a major INCONVENIENCE to clean it out.
Second, especially in the winter, fill your fresh water tank, and then unhook the hose to prevent it from freezing. This will keep the tank fresh, as well as saving the hose and/or connection points both to the trailer as well as to the spigot.
If you want, it is also a convenience to install an electric hot water element instead of using LP to heat water daily.
2000 390 Landyacht XL
1989 29' Excella
WBCCI #6673 jerry Hodge
Have no intention of arriving at the grave safely, but rather to skid in sideways, chocolate in one hand,throttle in the other, totally worn out and screaming
"WOO HOO, WHAT A RIDE!"